NDLI: Rate-varying space-time coding scheme for multiple-input multiple-output fading channel with zero-forcing receiver

Content Provider	IET Digital Library
Author	Wang, Chao Zhang, Zhaoyang
Abstract	In this study, a rate-varying space-time pre-coding scheme for a multiple-input multiple-output system in a fast-fading channel is proposed. In particular, unlike the traditional fixed rate space-time coding scheme, the transmitter which has no channel state information keeps choosing a pre-coding matrix randomly at each space-time symbol period to deliver the information until it is successfully decoded by the receiver. Since the number of received symbol vectors needed to successfully decode the information is determined by the channel realisation, the coding rate of the proposed scheme can adapt to the fast-fading channel. The exact expression of the equivalent signal-to-noise ratio gain after the post-combining and zero-forcing equalisation at the receiver side is derived, and a design criteria to achieve optimal performance in terms of average error probability and ergodic capacity under the mean power constraint is provided. Based on this, a minimal variance pre-coding (MVP) scheme is designed, which is compared with an intuitive Gaussian pre-coding scheme. It is shown that the MVP scheme has better performance and could adapt to different channel conditions.
Starting Page	624
Ending Page	631
Page Count	8
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 6, Apr (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0794
Journal	IET Communications
Publisher Date	2016-04-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Average Error Probability Channel Realisation Code Design Criteria Equivalent Signal-to-noise Ratio Ergodic Capacity Error Statistics Fading Channel Fast-fading Channel Intuitive Gaussian Precoding Scheme Mean Power Constraint MIMO Communication Minimal Variance Precoding Scheme Multiple-input Multiple-output System MVP Scheme Post-combining Precoding Radio Link And Equipment Rate-varying Space-time Precoding Scheme Space-time Code Statistics Zero-forcing Equalisation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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